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<TITLE>[Chapter 24] 24.64 java.io.StringWriter (JDK 1.1)</TITLE>
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<h2 CLASS=sect1><A CLASS="TITLE" NAME="JNUT2-CH-24-SECT-64">24.64 java.io.StringWriter (JDK 1.1)</A></h2>

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<P CLASS=para>
This class is a character output stream that uses an
internal <tt CLASS=literal>StringBuffer</tt> object as the destination of
the characters written to the stream.  When you create a
<tt CLASS=literal>StringWriter</tt>, you may optionally specify an initial
size for the <tt CLASS=literal>StringBuffer</tt>, but you do not specify
the <tt CLASS=literal>StringBuffer</tt> itself--it is managed internally
by the <tt CLASS=literal>StringWriter</tt>, and grows as necessary to
accommodate the characters written to it.

<P CLASS=para>
<tt CLASS=literal>StringWriter</tt> defines the standard <tt CLASS=literal>write()</tt>,
<tt CLASS=literal>flush()</tt>, and <tt CLASS=literal>close()</tt> methods that all
<tt CLASS=literal>Writer</tt> subclasses do, and also defines two methods
to obtain the characters that have been written into the
stream's internal buffer.  <tt CLASS=literal>toString()</tt> returns the
contents of the internal buffer as a <tt CLASS=literal>String</tt>, and
<tt CLASS=literal>getBuffer()</tt> returns the buffer itself.  Note that
<tt CLASS=literal>getBuffer()</tt> returns a reference to the actual
internal buffer, not a copy of it, so any changes you make
to the buffer are reflected in subsequent calls to
<tt CLASS=literal>toString()</tt>. 

<P CLASS=para>
<tt CLASS=literal>StringWriter</tt> is quite similar to
<tt CLASS=literal>CharArrayWriter</tt>, but does not have a byte stream
analog.

<DIV CLASS=screen>
<P>
<PRE>
public class <tt CLASS=literal>StringWriter</tt> extends Writer {
    // <tt CLASS=literal>Public Constructor</tt>
            public <tt CLASS=literal>StringWriter</tt>();
    // <tt CLASS=literal>Protected Constructor</tt>
            protected <tt CLASS=literal>StringWriter</tt>(int <tt CLASS=literal>initialSize</tt>);
    // <tt CLASS=literal>Public Instance Methods</tt>
            public void <tt CLASS=literal>close</tt>();  //<tt CLASS=literal> Defines Writer</tt>
            public void <tt CLASS=literal>flush</tt>();  //<tt CLASS=literal> Defines Writer</tt>
            public StringBuffer <tt CLASS=literal>getBuffer</tt>();
            public String <tt CLASS=literal>toString</tt>();  //<tt CLASS=literal> Overrides Object</tt>
            public void <tt CLASS=literal>write</tt>(int <tt CLASS=literal>c</tt>);  //<tt CLASS=literal> Overrides Writer</tt>
            public void <tt CLASS=literal>write</tt>(char[] <tt CLASS=literal>cbuf</tt>, int <tt CLASS=literal>off</tt>, int <tt CLASS=literal>len</tt>);  //<tt CLASS=literal> Defines Writer</tt>
            public void <tt CLASS=literal>write</tt>(String <tt CLASS=literal>str</tt>);  //<tt CLASS=literal> Overrides Writer</tt>
            public void <tt CLASS=literal>write</tt>(String <tt CLASS=literal>str</tt>, int <tt CLASS=literal>off</tt>, int <tt CLASS=literal>len</tt>);  //<tt CLASS=literal> Overrides Writer</tt>
}
</PRE>
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<DIV CLASS=sect2>
<h3 CLASS=sect2><A CLASS="TITLE" NAME="JNUT2-CH-24-SECT-64.2">Hierarchy:</A></h3>

<P CLASS=para>
Object->Writer->StringWriter

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